Rotary power device



E. H. GOLLINGS.

ROTARY POWER DEVICE.

A")LICAHON FILED AUG 11.1919.

1,378,856. muted ay 24,1921.

4 SHEETS--SHEET l.

Patented May 24, 1921.

4 SHEETS--SHEET 2.

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1.. H (.aommas.

lmTAHY PUWH. UIVHIE.

NFLICAHON HLED AUG 11,1919

1,878,856, Patented May 24, 1921,

4 SHEET S SHEET 3.

L H commas.

RUIAHY POWER [HLVICE- 1,378,856, 7 I Patented May 24, 1921,

4 SHEETS-SHEET ELLICK H. GOLLINGS, OF CHICAGO, ILLINOIS.

ROTARY POWER DEVICE.

Specification of Letters Patent.

Patented May 2-1, 1921.

Application filed August 11, 1919. Serial No. 316,910.

To (1/! whom if may concern:

Be it known that 1. ELLICK H. (,iroLLINos, a citizen of the I'nited States, and a resident of the city of Chicago. in the county of Cook and tate of Illinois, have invented certain new and useful Improvements in Rotary Power Devices: and I do hereby declare that the following is a full. clear, and exact description of the same. reference being had to the accompanying drawings, and to the numerals of reference marked thereon, which form a part of this specification.

This invention has reference more particularly to a device comprising inner and outer rotar v members which cooperate to provide gradually expanding chambers at one side of the device which after maximum expansion, transfer the contents to gradually contracting chambers at the opposite side of the device. and enable the device to operate as a pump by applving power to the rotary mem hers or to be used as a motor by introducing a fiuid under pressure into the expansible chambers.

An object of the invention is to provide an improved form of rotary pump or motor comprising inner and outer rotary members having pressure chan'ibers or pockets therebetwecn and a central valve element for affor-ding communication with the chambers or pockets and regulating the supply and discharge of tiuid thereto and therefrom.

.\nother object of the invention is to simplifv and cheapen the construction of such devices more partieailarly by providing intcrengaging teeth or projections having flat engaging surfaces for driving engagement of one member with the other.

further object of the invention is to pro virlc a construction in which the teeth have a sliding movement relatively to each other along parallel lines thereby providing a large contact area and consequently relatively little wear or leakage.

it is also an object of the invention to provide a device of the type set forth with equal nun'ihcrs of teeth on both inner and outer rotar v n'icmbers.

A further object of the invention is to pro vide intei'cngaging teeth and recesses each having pairs of parallel surfaces thereby facilitaling' the manufacture of such devices.

.\n additional object of the invention is to provide a device of the type set forth with a series of tangentially directed teeth or projections.

Other and further important objects of this invention will be apparent from the disclosures in the specification and drawings.

The invention (in a preferred form) is illustrated in the drawings and hereinafter more fully described.

()n the drawings:

Figure 1 is a side elevation of a device embodying the features of the present invention.

Fig. 2 is an end view of the same.

Fig. 3 is a section on the line 33 of Fig l.

Fig. Fig. 3.

Fig. 5 is a section on the line 5--5 of Fig. 1, with parts removed.

Fig. 6 is a side elevation of the rotor of the device.

Fig. 7 is a section on the line T--'( of Fig. 3.

Fig. 8 is a section on the line 8-8 of Fig. 1.

Figs. 9 and Ill are similar views to Fig. 3 showing the parts in different positions.

As shown onthe drawings:

The reference numeral 1 indicates a base for supporting the device which has the spaced standards 2. each of which has a clamp hearing 3. at the upper end having a cylindrical opening therethrough. Intermediate of the standards 2. is a hollow drum or cylinder 4. with the hollow shafts Fraud 6, extending eccentrically from the end Walls thereof through the clamp bearings so that the shafts are in alincment and the axis thereof is at one side of the axis of the cylinder or drum 4. Preferably. the shafts 5 and 6 are formed integrally with the cylinder 4 as is shown.

A wheel or rotor 7 is mounted to turn on the drum 4: and is provided with a series of tangentially directed projections 8. Mounted upon the inner ends of the shafts 5 and 6 to rotate thereon is a rotary casing 9, comprising a drum 1 and end plates 11 secured thereto by bolts 12. Each of said end plates has a sleeve 13 attached thereto, one of which sleeves is journaled on the shaft 5 and the other on the shaft 6.

The plates 11 are carefully spaced and constructed so as to contact with the outer 4 is a section on the line of Ill] l'aees ol' the drum 4 and wheel T thelehetween. sntliviently elosely to avoid leakage therela-tween and at the same time permit ditl'erential rotation of the easing t) and 1'0 tor on the drum 4-.

Within the drum are provided inwardly extending teeth 17 and intermediate projeetions It for engagement with the projet'tions ot the rotor. These teeth and projections may he formed either integral with the drum in or on a separate ring 14 as shown in the aeeoinpanying drawings. The numhers of teeth on these two parts being the same. they hoth rotate at exaetly the same speed.

in view of the t'aet that hoth the rotor and the ring 14 rotate at the same speed. a sliding :u'lion instead of a rolling aetion oer-urn hetween the teeth with the result that the eontaet surt'aees may he made mueh larger. Further. the eontaet surfaces on the teeth of hoth the rotor T and the ring 14 may he made flat.

From inspection of Figs. 3. and W. it will he seen that the only enrved surfaees are 3 3 and 35. hetween the teeth 15 and H. respeetively. Although eontaet is made with these surtares sueh eontaet is only neeessary for a short interval sinee at all other times the Hat surtaees IT and 1* are in eontaet and prevent passage of fluid through the lower part of the deviee. In the upper part of the devire sliding parallel eontaet hetween the surtaees i and i is relied upon entirely to separate the inlet and exhaust ehamhers.

The :u'tion ot' the deviee may he hest understood hy l'ollowing one pair of teeth around through one eoinplete revolution. Tillie the pair of teeth N and 15 at the lower left hand orner of Fig. 3. .\s the rotor T and rotating niemher ll turn in an antieloelnvise direetion the end surtaee 34 ot the tooth l5 approaches the surtaee -33 oi the rotor T as shown in Fig. 9 until they eontaet as shown in Fig. 1 Suhstantially simultaneously the snrt'aee 1T oi' the tooth s eontaets with the surfaee 1- of the inem her 16. Further rotation eauses separation of the surfaees 352 and 33 and the teeth 9 and to do not eontaet again until the surfa e 2 of the tooth l5 meets the surt'aee it of the tooth Then a sliding aetion takes plaee until the tooth 8 slides ofl the. end oi the tooth 1:). During this movement the surtaees remain in sliding eontaet sinee the surfaces retain their parallel relation during sneh movement owing to the tart that the. two memhers T and H rotate at the same speed. After the surtaees 1t and 2 separate. the eyele of operations eommeneesover again.

It will he ohserved that in the upper part of the device two pairs of teeth 8 and 15 are always in contact through their surfaees 1%.) and 2'). in the lower part of the deviee there is always eontaet hetween one or more of the following pairs of eontaets; 1T. 18'; Ill. 3.) or 32. 32%: so that two rhainhers are formed in the deviee. one for the admission ot fluid and the other for the exhaust of lluid therefrom.

By reason of the parallelism maintained hetween these eontaeting surt'aees leakage is redured to a minimum and smooth. even operation is ohtained. In addition to the parallel sliding aetion ot' the eontaeting surt'aees the use ot equal numhers ot' teeth on hoth rotor T and ring it enahles eertain of the surt'aees on hoth rotor and ring to he made parallel to eaeh other. Thus the surl'aees IT and It) on eaeh tooth h are parallel while the surfaees In and :20 are also parallel so that they may he eut at a single operation. In view of this t'aet and also sinee the snrfaees 32. 33 and 35. are eoneentrie with the parts on \vhieh they are formed the eonstrnetion is greatly simplified and cheapened.

The drum t is provided with an outlet port 21 and an inlet port 22 adapted to register with ports 2 in the rotor arranged hetween each projeetion H. thereon.

A eentral partition '34 divides the drum t into two ehamhers eommunieating with the outletv port 31 and the hollow shaft 5 and the other with the inlet port 2; and the hollow shaft (3.

At their outer ends eaeh sleeve 13 is provided with a gland 2T of any suit'ahle eonstruetion for preventing tluid eseaping hetween the sleeves I l and the shafts :3 and t'.

These sleeves 13 are arranged to rest in half hearings 25 arranged hetween the plates 11 and the glands 2T. on the upper ends ol standards 2t) \vhieh serve to steady the maehine in its rotation about the lixed shafts FM-and (i. 1

Provision is preterahly made for adjusting the position of the l arings so that the greater part.- of the weight is taken hy the shafts 5 and (3. and the halt hearings 25. only partially support and steady the machine. For this'purpose the standards 52 are elamped to the ends ot the hase l hy holts 28 so that their position hoth vertit-ally and laterally may he varied within small limits. .\n adjusting holt '31 is provided tor ehangnig the height of the hearings 3 as desired.

Power may he taken from or applied to the rotary easing hy means ot any suitahle means such as an annular gear 3 seenred to a series of lugs 29 on the outer fare of one of the plates 11. These lugs may eonveniently he reeessed as shown in Fig. T for the reception of the gear :28 which is thus held against lateral movement. Bolts 30 are provided for attaching the gear to the lugs,

The operation is as follows:

When used as a pump, power is applied to rotate the casing 9, in the direction indicated by the arrow in Fig. 8. As each tooth 8 of wheel 7 reaches the lower-most position, its outer surface 17 engages the surface 18 of the adjacent projection 16 on the drum 10. At the same time the teeth diametrically opposite thereto contact with the surface of the inwardly projecting teeth 15. In devices heretofore constructed the engaging surfaces have been made curved so that the teeth roll one against the other and engage along a single line which occasioned considerable wear and wasnot effective to prevent leakage between the intake and outlet sides of the device. \Vith the present construction. however, the sides of the projections and teeth are flat surfaces which come flat together as the device is operated. This construction not only avoids excessive wear but also insures a tight joint which will prevent leakage therethrough.

The increasing size of the pockets between the wheel 7 and the ring 14 creates a suction which draws the fluid therein and as the compartment reaches the upper position the tip of the tooth 8 engages the tip of the adjacent tooth 15 at the top of the ring 14 and separates the compartment formed therebetween from the space between the teeth on the intake side of the pump. Communication between the intake and discharge sides of the device through the drum 4, is prevented by the partition 24. Further rotation of the casing 9 first opens communication between this chamber and the discharge side of the device and then produces a gradual reduction in the size of the sockets on the discharge side and thereby results in forcing fluid through the ports 23, 21 into the outlet pipe Obviously this device may be used as a motor by applying fluid under pressure which reverses the operation of the parts.

I am aware that various details of construction maybe varied through a wide range without departing from the principles of this invention, and I therefore do not purpose limiting the patent granted otherwise than necessitated by the prior art.

I claim as my invention:

1. In a device of the class described the combination of a hollow rotary member having internally projecting teeth, the surfaces of said teeth being at an acute angle to the circumference of the hollow member, a rotor mounted eccentrically therein and having teeth adapted for engagement with the teeth of the rotary member to provide expansible inlet com mrtments at one side of the device and contractihlc outlet compartments at the opposite side of the device. a stationary hollow cylinder arranged axially of the rotor having a transverse partition therein, a hollow shaft secured to each side of the cylinder, a clamping bearing for supporting the outer end of each shaft, a sleeve around each shaft secured to and rotating with the hollow rotary member, and a bearing for external engagement with each sleeve.

2. In a device of the class described the combination of a hollow rotary member having two sets of internally projecting teeth of different sizes, a rotor mounted eccentrically therein and having teeth adapted for alternate engagement with the teeth of the rotary member to provide expansible inlet compartments at one side of the device and contractible outlet compartments at the opposite side of the device, a stationary hollow cylinder arranged axially of the rotor having a transverse partition therein, a hollow shaft secured to each side of the cylinder, a clamping bearing for supporting the outer end of each shaft. a sleeve around each shaft secured to and rotating with the hollow rotary member, a bearing for external engagement with each sleeve, and a gland between each clamping bearing and the adjacent sleeve bearing.

3. In a device of the class described the combination of a hollow rotary member having internally projecting teeth, the working surfaces of said teeth being at an acute angle to the circumference of the hollow member. a rotor mounted eccentrically therein and having teeth adapted for engagement with the teeth of the rotor member. to provide expansible inlet compartments at one side of the device and contractible outlet compartments at the opposite side of the device. a stationary hollow cylinder arranged axially of the rotor having a transverse partition therein. a hollow shaft secured to either side of the cylinder, a clampingbearing for supporting the outer end of each shaft, a sleeve around each shaft secured to and rotating with the hollow memher, a bearing for external engagement with each sleeve, and means for adjusting the position of each clamping bearing with respect to the adjacent bearing.

In testimony whereof I have hereunto subscribed my name in-the presence of two subscribing witnesses.

ELLIC-K H. GOLLINGS.

Witnesses CHARLES \V. HILLS, J r., EARL M. HARDINE. 

